Hi,
since r247617 my notebook consistently crashes with a page fault when I
turn it on. If I then reboot from the debugger, the system will boot
just fine. The last known working revision is r247186. I tried backing
out r247561 as this last touched kern_sysctl.c, but to no avail. This
is on amd64.
As can be seen below, gdb isn't really a big help. Does anyone know
what's going on?
[...]
<118>Entropy harvesting: interrupts ethernet point_to_point
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x1011e
fault code = supervisor read data, page not present
instruction pointer = 0x20:0x804a15c0
stack pointer = 0x28:0xff811561c670
frame pointer = 0x28:0xff811561c6e0
code segment= base 0x0, limit 0xf, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags= interrupt enabled, resume, IOPL = 0
current process = 47 (sysctl)
Reading symbols from /boot/kernel/if_iwn.ko...Reading symbols from
/boot/kernel/if_iwn.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/if_iwn.ko
Reading symbols from /boot/kernel/iwn5000fw.ko...Reading symbols from
/boot/kernel/iwn5000fw.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/iwn5000fw.ko
Reading symbols from /boot/modules/nvidia.ko...done.
Loaded symbols for /boot/modules/nvidia.ko
Reading symbols from /boot/kernel/linux.ko...Reading symbols from
/boot/kernel/linux.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/linux.ko
#0 doadump (textdump=0) at pcpu.h:229
229 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) bt
#0 doadump (textdump=0) at pcpu.h:229
#1 0x802c0bbe in db_dump (dummy=, dummy2=0,
dummy3=0, dummy4=0x0) at /usr/src/sys/ddb/db_command.c:543
#2 0x802c06ba in db_command (last_cmdp=,
cmd_table=, dopager=1)
at /usr/src/sys/ddb/db_command.c:449
#3 0x802c0472 in db_command_loop ()
at /usr/src/sys/ddb/db_command.c:502
#4 0x802c2dc0 in db_trap (type=, code=0)
at /usr/src/sys/ddb/db_main.c:231
#5 0x804cad23 in kdb_trap (type=12, code=0, tf=)
at /usr/src/sys/kern/subr_kdb.c:654
#6 0x806fd1c5 in trap_fatal (frame=0xff811561c5c0,
eva=) at /usr/src/sys/amd64/amd64/trap.c:867
#7 0x806fd466 in trap_pfault (frame=0x0, usermode=0)
at /usr/src/sys/amd64/amd64/trap.c:698
#8 0x806fccba in trap (frame=0xff811561c5c0)
at /usr/src/sys/amd64/amd64/trap.c:463
#9 0x806e6eb3 in calltrap () at exception.S:228
#10 0x804a15c0 in sysctl_sysctl_next_ls (lsp=,
name=0xff811561ca44, namelen=,
next=0xff811561c85c, len=0xff811561c8c4, level=4)
at /usr/src/sys/kern/kern_sysctl.c:745
---Type to continue, or q to quit---
#11 0x804a16ce in sysctl_sysctl_next_ls (lsp=0xfe0002a335b0,
name=0xff811561ca40, namelen=,
next=0xff811561c858, len=0xff811561c8c4, level=3)
at /usr/src/sys/kern/kern_sysctl.c:772
#12 0x804a16ce in sysctl_sysctl_next_ls (lsp=0xfe0002a335b0,
name=0xff811561ca3c, namelen=,
next=0xff811561c854, len=0xff811561c8c4, level=2)
at /usr/src/sys/kern/kern_sysctl.c:772
#13 0x804a16ce in sysctl_sysctl_next_ls (lsp=0xfe0002a335b0,
name=0xff811561ca38, namelen=,
next=0xff811561c850, len=0xff811561c8c4, level=1)
at /usr/src/sys/kern/kern_sysctl.c:772
#14 0x804a1513 in sysctl_sysctl_next (oidp=,
arg1=0xff811561ca38, arg2=4, req=0xff811561c968)
at /usr/src/sys/kern/kern_sysctl.c:794
#15 0x804a090d in sysctl_root (arg1=,
arg2=) at /usr/src/sys/kern/kern_sysctl.c:1493
#16 0x804a0ea8 in userland_sysctl (td=,
name=0xff811561ca30, namelen=,
old=, oldlenp=,
inkernel=, new=,
newlen=, retval=,
flags=358730064) at /usr/src/sys/kern/kern_sysctl.c:1603
---Type to continue, or q to quit---
#17 0x804a0c94 in sys___sysctl (td=0xfe0006037920,
uap=0xff811561cb40) at /usr/src/sys/kern/kern_sysctl.c:1529
#18 0x806fd88e in amd64_syscall (td=0xfe0006037920, traced=0)
at subr_syscall.c:134
#19 0x806e719b in Xfast_syscall () at exception.S:387
#20 0x00080094a30a in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language: auto; currently minimal
(kgdb) f 10
#10 0x804a15c0 in sysctl_sysctl_next_ls (lsp=,
name=0xff811561ca44, namelen=,
next=0xff811561c85c, len=0xff811561c8c4, level=4)
at /usr/src/sys/kern/kern_sysctl.c:745
745 if (!sysctl_sysctl_next_ls(lsp, 0, 0, next+1,
(kgdb) l
740 return (0);
741 if (oidp->oid_handler)
742 /* We really should call the handler
here...*/
743 return (0);
744
